{
  "threat_severity" : "Important",
  "public_date" : "2017-02-22T00:00:00Z",
  "bugzilla" : {
    "description" : "kernel: use after free in dccp protocol",
    "id" : "1423071",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1423071"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-416",
  "details" : [ "The dccp_rcv_state_process function in net/dccp/input.c in the Linux kernel through 4.9.11 mishandles DCCP_PKT_REQUEST packet data structures in the LISTEN state, which allows local users to obtain root privileges or cause a denial of service (double free) via an application that makes an IPV6_RECVPKTINFO setsockopt system call.", "A use-after-free flaw was found in the way the Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation freed SKB (socket buffer) resources for a DCCP_PKT_REQUEST packet when the IPV6_RECVPKTINFO option is set on the socket. A local, unprivileged user could use this flaw to alter the kernel memory, allowing them to escalate their privileges on the system." ],
  "statement" : "This issue affects Red Hat Enterprise Linux 5, 6, 7, and Red Hat Enterprise MRG 2 kernels.\nAs this issue is rated as Important, it has been scheduled to be fixed in a future version of Red Hat Enterprise Linux 5, 6, 7, and Red Hat Enterprise MRG 2  kernels.",
  "acknowledgement" : "Red Hat would like to thank Andrey Konovalov (Google) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "release_date" : "2017-02-24T00:00:00Z",
    "advisory" : "RHSA-2017:0323",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5",
    "package" : "kernel-0:2.6.18-419.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5.6 Long Life",
    "release_date" : "2017-02-28T00:00:00Z",
    "advisory" : "RHSA-2017:0347",
    "cpe" : "cpe:/o:redhat:rhel_mission_critical:5.6",
    "package" : "kernel-0:2.6.18-238.58.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5.9 Long Life",
    "release_date" : "2017-02-28T00:00:00Z",
    "advisory" : "RHSA-2017:0346",
    "cpe" : "cpe:/o:redhat:rhel_aus:5.9",
    "package" : "kernel-0:2.6.18-348.33.1.el5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2017-02-22T00:00:00Z",
    "advisory" : "RHSA-2017:0293",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "kernel-0:2.6.32-642.13.2.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.2 Advanced Update Support",
    "release_date" : "2017-03-01T00:00:00Z",
    "advisory" : "RHSA-2017:0365",
    "cpe" : "cpe:/o:redhat:rhel_mission_critical:6.2",
    "package" : "kernel-0:2.6.32-220.70.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.4 Advanced Update Support",
    "release_date" : "2017-02-28T00:00:00Z",
    "advisory" : "RHSA-2017:0345",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.4",
    "package" : "kernel-0:2.6.32-358.77.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.5 Advanced Update Support",
    "release_date" : "2017-03-01T00:00:00Z",
    "advisory" : "RHSA-2017:0366",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.5",
    "package" : "kernel-0:2.6.32-431.78.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.5 Telco Extended Update Support",
    "release_date" : "2017-03-01T00:00:00Z",
    "advisory" : "RHSA-2017:0366",
    "cpe" : "cpe:/o:redhat:rhel_tus:6.5",
    "package" : "kernel-0:2.6.32-431.78.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.6 Advanced Update Support",
    "release_date" : "2017-02-24T00:00:00Z",
    "advisory" : "RHSA-2017:0324",
    "cpe" : "cpe:/o:redhat:rhel_aus:6.6",
    "package" : "kernel-0:2.6.32-504.57.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.6 Telco Extended Update Support",
    "release_date" : "2017-02-24T00:00:00Z",
    "advisory" : "RHSA-2017:0324",
    "cpe" : "cpe:/o:redhat:rhel_tus:6.6",
    "package" : "kernel-0:2.6.32-504.57.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6.7 Extended Update Support",
    "release_date" : "2017-02-23T00:00:00Z",
    "advisory" : "RHSA-2017:0316",
    "cpe" : "cpe:/o:redhat:rhel_eus:6.7",
    "package" : "kernel-0:2.6.32-573.40.1.el6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2017-02-22T00:00:00Z",
    "advisory" : "RHSA-2017:0295",
    "cpe" : "cpe:/a:redhat:rhel_extras_rt:7",
    "package" : "kernel-rt-0:3.10.0-514.6.1.rt56.430.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2017-02-22T00:00:00Z",
    "advisory" : "RHSA-2017:0294",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "kernel-0:3.10.0-514.6.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.1 Extended Update Support",
    "release_date" : "2017-03-02T00:00:00Z",
    "advisory" : "RHSA-2017:0403",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.1",
    "package" : "kernel-0:3.10.0-229.49.1.ael7b"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.2 Extended Update Support",
    "release_date" : "2017-03-14T00:00:00Z",
    "advisory" : "RHSA-2017:0501",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.2",
    "package" : "kernel-0:3.10.0-327.49.2.el7"
  }, {
    "product_name" : "Red Hat Enterprise MRG 2",
    "release_date" : "2017-04-12T00:00:00Z",
    "advisory" : "RHSA-2017:0932",
    "cpe" : "cpe:/a:redhat:enterprise_mrg:2:server:el6",
    "package" : "kernel-rt-1:3.10.0-514.rt56.219.el6rt"
  }, {
    "product_name" : "RHEV 3.X Hypervisor and Agents for RHEL-6",
    "release_date" : "2017-05-09T00:00:00Z",
    "advisory" : "RHSA-2017:1209",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6::hypervisor",
    "package" : "rhev-hypervisor7-0:7.3-20170425.0.el6ev"
  }, {
    "product_name" : "RHEV 3.X Hypervisor and Agents for RHEL-7",
    "release_date" : "2017-05-09T00:00:00Z",
    "advisory" : "RHSA-2017:1209",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7::hypervisor",
    "package" : "rhev-hypervisor7-0:7.3-20170425.0.el7ev"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Virtualization 4",
    "fix_state" : "Affected",
    "package_name" : "distribution",
    "cpe" : "cpe:/o:redhat:rhev_hypervisor:4"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2017-6074\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-6074\nhttps://access.redhat.com/node/2934281" ],
  "csaw" : true,
  "name" : "CVE-2017-6074",
  "mitigation" : {
    "value" : "Recent versions of the SELinux policy can mitigate this flaw. The steps below will work with SELinux enabled or disabled.\nAs the DCCP module will be auto-loaded when required, its use can be disabled \nby preventing the module from loading with the following instructions:\n# echo \"install dccp /bin/true\" >> /etc/modprobe.d/disable-dccp.conf \nThe system will need to be restarted if the DCCP modules are loaded. In most circumstances, the DCCP kernel modules will be unable to be unloaded while any network interfaces are active and the protocol is in use.\nIf you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.",
    "lang" : "en:us"
  }
}